/*BEGIN: Khoa Ky Tu Khong Cho Phep*/
var rBlock={
  'SpecialChar':/['\'\"\\#~`<>;']/g,
  'AllSpecialChar':/['@\'\"\\~<>;`&\/%$^*{}\[\]!|():,?+=#']/g,
  'NotNumbers':/[^\d]/g
}
function BlockChar(div,type)
{
	div.value = div.value.replace(rBlock[type],'');
	div.value = div.value.replace(/ +/g,' ');
}
/*END Khoa Ky Tu Khong Cho Phep*/